Thank you for the links. This is what helps a lot. The issue though is budget. Those FRP wall boards are 3x the price of mold resistant sheetrock. I don't know why I shouldn't use it though (@DNKDUKE). I would be using semi gloss paint, easy enough to wipe down. This is all electric so I'm not near an open flame. I'd like to keep the finish reasonable. Between the shed, electric and brewery stuff, I'm in deep. I'm not sure why sheetrock and gloss paint won't work like it seems to in my kitchen. Also, don't I need to have some kind of backing first then install the wallboard or is wallboard, even the thrifty one linked above in place of the drywall and goes right over the insulation?
I appreciate the help and if I have to spend $30-$45 on a 4x8 piece of wallboard, then so be it. But it seems excessive. Well, and I didn't intend to have white walls.
Hello,
I put the MDF Thrift panel over r-13 Fiberglass Insulation - in a detached garage. Kind of like your shed, just 480 sq ft and one giant door.
I did it for two reasons,
1- I did not have to paint it.
2- I can wipe it down. It's not water proof by any means - just water resistant
From a past detached garage that I had drywalled, I learned that muck and water that drips off my car, will stain even a painted drywall surface.
Since I am in Michigan, and you are not - your results may vary.
We have 3 ft of snow surrounding the garage right now - there is water in the air, even at 10F. My hope is that during this summer the MDF will dry out
when temps hit 120F in the garage - with only passive ventilation.
And everything will be better, no more wavy walls....
The MDF may work fine for your application.
That being said......
I am also planning a Electric Basement brewery of my own, I start next month.
I plan on having FRP on the walls - with Closed cell foam insulation & a vapor barrier behind it.
I think the concerns over moisture are correct for your shed.
Because it is small..... and enclosed, and will have other 'item's creating heat.
I can open my garage door while I brew, and have no concern for condensation.
My plan for my basement brewery is Big fan, FRP on the walls & ceiling.
Epoxy the floor, squeegee to the drain, as my Basement is an extension of my living space, I have a lot more concerns about moisture.
Try the Green Board, if you have adequate ventilation it may work for you !
The temperature difference between the inside of your Shed & the outside cold air is really what will dictate how much Condensation/moisture you need to worry about !!
Steve